Been a good while since I’ve heard any Waylon,Paul Rodgers was the 1st name I thought of.
Johnny Cash, and I'll throw-in Waylon Jennings... I like men who sound like men.
Warren Zevon
That's without a lot of thought, and it depends on the mood I'm in.
Rock male vocalists,What's the criteria?
ok!Rock male vocalists,
Dean Martin?Elvis Presley
Elton John
Robert Plant
Dean Martin (Honorable mention)